be217a543ee33bada0eaa1c490da6ab44ec8119f6225b4f934a3d30bb67aea56

Analysis

max time kernel
143s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 08:06

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General

Target

2024-04-18_ec037108d64d64dfe561c9900f421d2d_cryptolocker.exe
Size

40KB
MD5

ec037108d64d64dfe561c9900f421d2d
SHA1

0202642e9bb37f7e843df817f4197da7163c6dfc
SHA256

be217a543ee33bada0eaa1c490da6ab44ec8119f6225b4f934a3d30bb67aea56
SHA512

24e3fbc26b0073e62bf8dd66ce6814837b625c24b3b8913b580953470d3a314beec27529a31aee6e870a970dd8d5e8c59cb503f8d27366127ad7b12ba670d70f
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfr4:X6QFElP6n+gJQMOtEvwDpjBsYK6r4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002323c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002323c-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-18_ec037108d64d64dfe561c9900f421d2d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3964	asih.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5080 wrote to memory of 3964	5080	2024-04-18_ec037108d64d64dfe561c9900f421d2d_cryptolocker.exe	90
PID 5080 wrote to memory of 3964	5080	2024-04-18_ec037108d64d64dfe561c9900f421d2d_cryptolocker.exe	90
PID 5080 wrote to memory of 3964	5080	2024-04-18_ec037108d64d64dfe561c9900f421d2d_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-04-18_ec037108d64d64dfe561c9900f421d2d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_ec037108d64d64dfe561c9900f421d2d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5080
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3964

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4080 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
1⤵
PID:4776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
40KB

MD5
f40c89da85854cbdada5597230023c1d

SHA1
e7a7c398aecf1fe1abff02094920a6412165cb93

SHA256
7d6e07ec4377ffa89c7b97c6f913bd9ea274b62a5ca87692cfe71ce65a5f66aa

SHA512
2477ac139ceba2a3ff34c934165aeef1452aef8e2390b154e28fc739015f2cb7073ff8721021f4c9b2b41ce48507b4cb9562535befc352f75121c70abc52eac4

Download Submit
memory/3964-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3964-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5080-0-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/5080-1-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/5080-2-0x0000000000720000-0x0000000000726000-memory.dmp

Filesize
24KB

Download